<template>
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../../assets/img/logo.jpeg" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button @click="logout" type="primary" plain>退出</el-button>
        </el-header>
        <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu background-color="rgba(27, 25, 136, 0.05)"
                        text-color="#fff"
                        active-text-color="#409EFF"
                        unique-opened :collapse="isCollapse" 
                        :collapse-transition="false" 
                        router :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                        <!-- 一级菜单的模板区域 -->
                    <template slot="title">
                            <!-- 图标 -->
                    <i :class="iconsObj[item.id]"></i>
                    <!-- 文本 -->
                    <span>{{item.authName}}</span>
                    </template>

                        <!-- 二级菜单 -->
                    <el-menu-item  :index="'/' + subItem.path" 
                    v-for="subItem in item.children" 
                    :key="subItem.id" 
                    @click="saveNavState('/' + subItem.path)">
                        <template slot="title">
                            <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 文本 -->
                            <span>{{subItem.authName}}</span>
                        </template>
                    </el-menu-item>
                    
                </el-submenu>
                </el-menu>
            </el-aside>

            <!-- 右侧内容主体 -->
            <el-main>
                <!-- 路由占位符 -->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    data(){
        return{
            menulist:[],
             iconsObj: {
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
      },
        // 是否折叠
            isCollapse: false,
            // 被激活的链接地址
            activePath: ''

        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            // 清空存储sessionStorage
            // window.sessionStorage.clear()
            // this.$router.push('/login')

            this.$confirm('是否继续退出登录', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning',
            center: true
            }).then(() => {
            this.$message({
                type: 'success',
                message: '退出登录成功!'
            });
            window.sessionStorage.clear()
            this.$router.push('/login')

            }).catch(() => {
            this.$message({
                type: 'info',
                message: '退出登录失败！' 
                });
                // this.$router.push('/home')
            });

        },
         // 获取所有的菜单
        async getMenuList() {
            const { data: res } = await this.$http.get('menus')
            if (res.meta.status !== 200) 
            return this.$message.error(res.meta.msg)
            this.menulist = res.data
            console.log(res)
        },
        // 点击按钮，切换菜单的折叠与展开
        toggleCollapse() {
            this.isCollapse = !this.isCollapse
        },
        // 保存链接的激活状态
        saveNavState(activePath) {
            window.sessionStorage.setItem('activePath', activePath)
            this.activePath = activePath
        }

    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: rgba(8, 7, 116, 0.925);
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
    img{
        width: 60px;
        height: 60px;
        border-radius: 50%;
    }
}
.el-aside{
    background-color: rgba(27, 25, 136, 0.9);
    .el-menu {
        border-right: none;
  }
}
.el-main {
  background-color: #f2f4f7;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: rgba(27, 25, 136, 0.9);
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}

</style>